Despite the many usability issues that we fixed since the first release of Tor Connection, 3 test participants out of 4 failed to connect when access to the Tor network was blocked.
Since then we fixed 14 usability issues affecting Tor Connection: to understand better why connecting to Tor fails, to make it easier to configure a Tor bridge, and to make it easier to sign in to a network using a captive portal.
We didn't find any serious usability issues in the new Persistent Storage. The fact that people don't have to restart to create and enable the Persistent Storage and that their data (eg. Wi-Fi password) is stored on creation were huge improvements compared to the old Persistent Storage.